Submission #1033456

#	Time	Username	Problem	Language	Result	Execution time	Memory
1033456		Maite_Morale	Counting Mushrooms (IOI20_mushrooms)	C++14	Compilation error	0 ms	0 KiB

mushrooms

#include <bits/stdc++.h>
using namespace std;

long long count_tastiness(long long x, std::vector<long long> a) {
	long long c=0,c1=0;long long d=0;
	std::vector<long long> t={1},v={0};
	for(long long i=0;i<63;i++){
		d+=(1LL<<i);
		if(i<a.size())c1+=(a[i]<<i);
		c=c1/x;
		t.push_back(t.back());
		v.push_back(min(c,d));
		long long h=c-(1LL<<i);
		long long r=0;
		while(h>=0){
			long long lg=0;
			if(h>0)lg=log2(h)+1LL;
			lg=min(lg,i);
			if(h>=v[lg]){
				r+=t[lg];
				break;
			}	
			r+=t[lg-1];
			h-=(1LL<<(lg-1));
		}
		t[i+1]+=r;
	}	
return t[63];
}

Compilation message (stderr)

mushrooms.cpp: In function 'long long int count_tastiness(long long int, std::vector<long long int>)':
mushrooms.cpp:9:7: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    9 |   if(i<a.size())c1+=(a[i]<<i);
      |      ~^~~~~~~~~
/usr/bin/ld: /tmp/ccdeAB4m.o: in function `main':
stub.cpp:(.text.startup+0x86): undefined reference to `count_mushrooms(int)'
collect2: error: ld returned 1 exit status